Intelligent electric meter based on Beidou satellite signal remote calibration

By remotely calibrating smart meters based on BeiDou satellite signals, the problems of insufficient metering accuracy and complex management have been solved. Real-time correction and high-frequency monitoring of metering results have been achieved, reducing management costs. The system is highly adaptable and supports centralized management.

CN122330503APending Publication Date: 2026-07-03HEBEI UNIVERSITY
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Patent Information

Application Number
CN202610536782.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing meter calibration technologies suffer from insufficient adaptability to measurement accuracy, inability to correct sampling coefficients in real time, lack of dynamic correction in calibration mechanisms, low degree of traceability and integration of measurement values, complex design of laboratory equipment, high management costs, and difficulty in achieving high-frequency monitoring throughout the day.

Method used

The smart meter adopts remote calibration based on Beidou satellite signals. It provides a time reference through the satellite common-view synchronization unit. Combined with voltage sampling and calibration unit, current sampling and calibration unit and conversion unit, it realizes dynamic correction of sampling coefficient. It also highly integrates voltage source and constant current source, supports self-calibration and metering mode switching, and is equipped with human-machine interface for centralized management.

Benefits of technology

It ensures that the meter readings match the true value, maintains accuracy at all times, simplifies hardware modification and compatibility, reduces management and maintenance costs, and supports high-frequency real-time monitoring and intelligent management.

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Abstract

The invention provides an intelligent electric meter based on Beidou satellite signal remote calibration, and relates to the technical field of electric power metering instruments. The intelligent electric meter comprises a satellite common-view synchronization unit, a voltage sampling and calibration unit, a current sampling and calibration unit, a conversion unit and a control and communication unit. The satellite common-view synchronization unit receives Beidou satellite signals and provides a unified time reference. The conversion unit comprises a reciprocal V / F converter and a reciprocal I / F converter, and realizes bidirectional conversion between a voltage / current signal and a frequency signal; the microcontroller responds to an instruction of the upper computer and is switched between a self-calibration mode and a metering mode, and in the self-calibration mode, frequency calibration is carried out on the reciprocal converter, and an actual partial pressure ratio coefficient and an actual split ratio coefficient are measured and corrected; and dynamically correcting the voltage and current signals and calculating the electric energy based on the corrected coefficient in a metering mode. According to the invention, remote high-precision self-calibration of the electric meter is realized, the metering precision is high, visual centralized management is supported, and the operation and maintenance cost is greatly reduced.
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